Concrete-wall-mold device.



J. M. THOMPSON. CONCRETE WALL MOLD DEVICE.

APPUCATION FILED JULY]. I9I8 Patented Jan. 14, 1919.

2 SHEETS SHEET I.

J. M. THUMPSQMH CONCRETE WALL MOLD DEVICE.

APPLICATION FILED JULYI. 1918.

1,291,257., Patented Jan. 14,1919.

2 SHEETSSHEET Z.

, gum/01 @Rnmm v $773 1720179123012 WW I V meme/1 a STATES JACOB MULLEN'THOMPSON, 0F FONDTDU LAC, WISCONSIN.

CONCRETE-WALL-MOLD DEVICE.

Specification of Letters Patent. 1

Patented Jan. 14, 1919.

Application filed July 1, 1918. Serial No. 242,780.

and more particularly to a device intended to be used in connection withmolds for forming concrete or cement walls and the like.

The principal object of the invention is to provide a clamp for holdingthe two sides of a mold in their relatively spaced position, said clampsbeing easily manipulated and being capable of being placed at any pointupon the sides of the mold.

Another object of the invention is to improve upon devices of thisgeneral class by providing a device which will be extremely simple,strong, durable and inexpensive in construction, one which will beefficient and reliable in operation, and Well adapted to the purpose forwhich it is designed.

With these and numerous other objects in view, the invention consists ofcertain novel features of construction and the com bination andarrangement of parts as will be hereinafter fully described and claimed.

Tn the accompanying drawings forming a part of the application, and inwhich similar reference characters designate like parts throughout theseveral views lFigure 1 is a cross sectional view through the wall andmold;

Fig. 2 is a detailed horizontal sectional view taken on the planeindicated by the line 2-2 of Fig. 1.

Fig. 3 is a longitudinal sectional view through one of the clamps; and

Fig. 41 is a perspective view of the same.

Referring more particularly to the drawings, the numerals 1 and 2represent the two sides of the mold, each of these two sides beingcomposed of one or more wooden planks 3, the latter extendinglongitudinally of the mold and being placed edge to edge as clearlyshown by the drawings. These two sides 1 and 2 are maintained in spacedparallel relation by means of two or more spac- This invention relatesgenerally to molds,

ing ties 4:. These spacing ties 4 are fiat metallic bars having openings5 extending transversely between the sides 1 and 2 adj acent the sideedges of the planks 3. Where more than one plank 3 is used in one sideofthe-mold the ends of the intermediate ties 4 overlap themeeting edges ofthe planks and hold bothsets in their relatively spaced relation.

-The reference numerals 6. designate flat metallic bars which. extendthrough the sides of the mold between the side edges of the planks 3,and having their inner ends constructed into hook shape as at 7 toengage the openings 5 in the spacing ties 4-. The other ends of the bars6 are connected to U-shaped metallic body members 8 by means of rivets9. The ends of these U-shaped body members 8 are provided with screw-..threaded openings 10 through which operate screws 11. These screws 11are headed at their outer ends as at 12, and are spiked at their innerends as at 13, while they are provided intermediate of their ends withreduced portions 1 1.

The spikes 13 and reduced portions 14 of.

the screws 11 are swiveled in the ends of inverted U-shaped members 15which serve as limiting the longitudinal movement of the screws withrespect to the base members 8.

The clamps at the top and the bottom of the mold are each provided withonly one screw, while those used between the various planks are eachprovided with two screws, one of which engages the lowermost plank andthe other engages the uppermost plank.

The use and operation of the device will be readily understood without.description other than by stating that in constructing the mold thelowermost planks are first placed in their spaced parallel position withthe spacing ties 1 disposed between them. The bars 6 are then engagedwith the openings in the ties 4: and; the screws 11 are turned untiltheir spiked ends are brought to bear against the outside of the planks.Other planks are then placed edge to edge upon the lower planks and themold is built as high as desired. After the concrete or cement is priedbetween the sides 1 and 2 and allowed to set, the screws are turned inthe opposite Wall as a r reinforcement or else they maybe withdrawn andused overland over again.

As various changes in form, proportion,

and in the minor details of construction may be resorted to Withoutdeparting from the spirit ofthis invention, itcis to be under- 7stood'that I do not Wish to be limited to the ing a bar having one endformed with a hook adapted to be detachably connected to the spacing tieof a-concrete wall mold, a body member secured to the other-endo f saidbar and having a screw-threaded opening therein, a-screw' operating insaid opening, and

- the means carried by said screw for limiting its forward and rearwardmovement with respect to said body member.

2. A device ofthe'class described c-omprising' a flat bar having one endformed with a ho'ok. adapted 'to be detachablyconnected to thespacing'tieiof a concrete wall mold, a U- shaped body member-secured tothe other end of said bar and having screw-threaded openings in its twoend portions, a screw opcrating in said openings, and means carried bysaid screw for limiting its forward and rearward movement with respectto the same.

3..A device of the class described comprising a fiat bar hzvmg one endformed -with ahoolr adapted to be detachably connected to the spacingtie of a concrete wall o Gopiesof this patent may b'obtained for-fivecents each, byvaddressing the Commissioner of Patents,

4 Washington, 13:0."

